If your body is weak and achy, there are several factors: 1. The most common factor is that the body consumes too much ATP, releases a large amount of lactic acid, or exercises too much, which leads to too much anaerobic glycolysis, which will accumulate too much acid in the body, especially in the more developed areas of the muscles, and thus lead to aching. 2. Weakness and aching are usually caused by ionic disorders, and can also occur when there are hypokalemia and hyponatremia. 3. The weakness and soreness can also occur in hypokalemia and hyponatremia.3. Rhabdomyolysis occurs in the body, for example, when taking certain medications that cause adverse reactions, such as lack of energy, soreness and other clinical manifestations.4. Heat stroke with heat spasms, heat exhaustion and pyrexia also occurs in the body, accompanied by generalized soreness and clinical symptoms and manifestations.5. In the previous day of drinking too much, the next day, there will be a lack of energy, soreness and other clinical symptoms and manifestations.